Sony kdl-v40xbr1 has horizontal lines

If the line is Horizontal then you deffinantly have a cable issue, replace the cable and that should do it, if it continues the problem could be in the port itself, if using HDMI switch to VGA or composite to test this theory. please keep me posted.

screen is broken it needs to be replaced by a technician.
Line indicates that its broken

This sounds like what I managed to do to my screen, even though I knew better. Is there any chance you layed the screen face down at some time?

Even though you can still watch it OK, you probably have hairline fractures in the screen face (NOT the screen itself- be thankful for that- the cracks are in the screen coating). LCD screens are a very thin glass laminate with a thin protective glass-like coating. When they are laid flat (like I did to connect cables) if the screen bears any weight, microcracks develop on the front of the screen.

I am sorry to say that the effect is permanent.

Yeah we have the same exact problem here. Defective TV....ours would correct itself after 30 mins, but now it's blurry all the time. I'm never dropping 2K on a SONY tv again.

You either have failed 24vdc power supply section or failed backlight inverter board, check for 24vdc first, look for caps with leaking/bulging top.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Sony+BRAVIA+KDL+-V40XBR1+

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

my sony kdl v40xbr1 screen is crack inside

hi have you check the sleep timer on the tv cause it might be on and you need to turn it off

Try different cable, if you still get the problem after replacing cables, then you have a defective sygnal board (input board).

i have a whie line going horizontal all the way across the sceen. how do i get rid of it?

THAT HAPPENS WHEN IT GETS TOO HOT, MAYBE YOU HAVE TOO MANY THINGS PLUGGED INTO THE SAME OUTLET